About 1/10th of the posts I think I've made here have been related to career advice that I've offered people, so hopefully I can present a helpful perspective. In my role as a Corporate Recruiter, I deal with hundreds of situations similar to this on a monthly basis.
I can't help but comment on your story and all I can say is that this company you're referring to sounds shockingly unprofessional and bordering on being a liability to themselves legally.
In the employment practice you have to be so careful how job offers, the rescinding of offers, and general communication to candidates and new hires is handled. The woman you're referring to is putting her company in serious jeopardy by speaking to a new hire in such an unprofessional manner. If she is a Human Resources professional, it dissapoints me that a peer reflects our profession so poorly.
In regards to salary negotioations, hopefully I can provide a little insight from the other side of the table. It seems to be a common misconception that companies play hard ball in negotiations out of principle and it's a matter of perception or interpretation. In many cases, organizations have a detailed salary structure with specific grade limitations. Also, don't underestimate the importance of equity. While one may feel that they are worth a certain amount of money, that's not the driving force. Any respectable organization is mindful of it's current staff when establishing an offer. Never take an offer that is less than you expected as an insult. The offer itself is a compliment and reflection of the companies opinion of you. More likely than not, their salary structure has caused a certain limitation to what they can offer the external market.
Ultimately, never take these new hire negotiations personally. If you communicate your requests in a open and up-fron manner with respect, 99% of people will pay you the same respect in return.